Toyspeed.org.nz Message Board

by **ChaosAD** » Mon May 02, 2005 9:44 pm

Due to the large cams im putting in my 4age I will be needing to upgrade my exhaust.
Im going to use 2 1/2"pipe and mandrel bends, but need advice on what type of muffler/resonators to go for that wont be too loud or restrictive.

Does anyone have any ideas?

by **Bazda** » Mon May 02, 2005 10:00 pm

2 x 19" long coby resonators, and a rear N1 style muffler from actiondan.

I can take my whole system off me car and it doesnt make a difference, weird that. So must be pretty free flowing.

what cams u using?

by **ChaosAD** » Tue May 03, 2005 1:10 pm

240 deg @ .050" in 8.8mm lift
323 deg @ .050" ex 8.8mm lift

Are those long resonators the ones with the big restrictive looking expansion chambers? Those ones let the gasses expand then try and compress them back into a small pipe

Is your system very loud? I suppose your turbo would quieten it down a bit.

by **Bazda** » Tue May 03, 2005 1:43 pm

you can get ones with or without the expansion chambers.
Yes my system is pretty loud even with the turbo.
When it was s/c it was damn loud!

by **Loudtoy** » Tue May 03, 2005 8:09 pm

Try some lukey mufflers, my apprentice boy has some on his bzg and he also has a 2 1/2 inch mandrel bent due to wanting to turbo it at some stage - sounds quite nice, quite deep and not to loud.
Thats my suggestion anyhow - i'd avoid n1 style mufflers like the plauge for a na car, to hard to get a nice sound and keep quite.

by **CozmoNz** » Tue May 03, 2005 8:35 pm

Loudtoy wrote:Try some lukey mufflers, my apprentice boy has some on his bzg and he also has a 2 1/2 inch mandrel bent due to wanting to turbo it at some stage - sounds quite nice, quite deep and not to loud.
Thats my suggestion anyhow - i'd avoid n1 style mufflers like the plauge for a na car, to hard to get a nice sound and keep quite.

long reso's keep it nice....

quiet? why? lol

by **Loudtoy** » Tue May 03, 2005 9:25 pm

CozmoNz wrote:quiet? why? lol

ChaosAD wrote: what type of muffler/resonators to go for that wont be too loud or restrictive.

Have found in my experince that 2 decent lukey mufflers using one as a reso flow extremely well whilst sounding nice without being to loud, maybe quiet wasn't quite the right word but it got my point across. Also you need at least 2 long reso's to keep the noise down as well as a decent rear muffler - all these add up to more than a decent muffler and a decent muffler used as a reso, and are more restrictive to boot!

by **Adamal** » Tue May 03, 2005 9:35 pm

Is it just me or does 2 1/2" sound a bit too big for a 1600cc N/A engine?

I know people that won't go bigger than that on a 2 litre turbo engine...

by **TRDWGN** » Tue May 03, 2005 11:29 pm

Group N Lancer EVO III rally cars ran around 260HP (or something like that) and ran a 2inch exhaust.....

All JDM bolt on systems for 4AGE's are 2.5in....

I have just replaced my 2.5in system with a 2.25in system running into two 19in coby's (with expansion chambers however these offer no restrictions :lol:

) then it splits into twin 2 inch and out through two 2inch Holden Commodore VX V8 factory resonators (baffled not straight through, although are off a 250kw motor so offer virtually no restriction on a measly blacktop output :lol:

) end result is better than my 2.5in system and factory quiet

plus being the one of the only twin rear mufflered AE111's around!

by **Bazda** » Wed May 04, 2005 12:52 am

since u got cams and all, are u getting tuned length extractors made? with a collector and a taper coming of that at a tuned length as well.....

by **ChaosAD** » Wed May 04, 2005 1:07 pm

Yup, tuned length extractors with 2 1/2" collector.
With the cams having so much overlap I will need minimal restriction on the intake/exhaust.

TRDWGN, what sort of mufflers/reso's did your old system have?

by **TRDWGN** » Wed May 04, 2005 6:30 pm

Was a Fujitsubo system that had a resonator that was about the size and shape of a cat and a rear muffler, i also added a 2.5in coby in place of cat...

Keep an eye out for HSV resonators on trademe also as they are 2.25 & 2.5in (depending on year) straight thru stainless steel with good sound damping qualities, and usually friggn cheap to buy and near perfect for a 4AGE!

by **ChaosAD** » Thu Jun 16, 2005 1:17 pm

Looks like a lukey Ultra Flo http://www.rpw.com.au/Products/Exhaust%20Products/Mufflers.htm might be the go.

Any idea on when they go for? Trademe seems to be flooded with the N1 designs but piss all decent mufflers.

by **ChaosAD** » Sat Jun 18, 2005 4:25 pm

by **Loudtoy** » Sat Jun 18, 2005 6:04 pm

It's been a while since i brought any but having talked to a few people and finding out a few things it is generally agreed that they go for around $150 each, less than some of those big bling n1 style mufflers

Plus they aren't overly large external dimension size wise so they are easy to fit in and keep your pipe work simple

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